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In a series of 3n observations, if n observations are equal a and remaining observations are equal –2a, then the mean deviation of observations about their mean will be:-
The statement p → (p ↔ q) is logically equivalent to :-
If 7 dice are thrown simutaneously, then probability that all six digit appears on the upper face is equal to -
If D = then, the incorrect statement is -
A man has three friends. The number of way he can invite one friend every day for dinner on six consecutive nights so that no friend is invited more than three times is :-
Let a and b be the two distinct roots of the equation x3 + 3x2 – 1 = 0. The equation which has (ab) as its root is equal to :-
Consider a sequence of 101 term as
If nth term is greatest term of sequence, then n is equal to :-
The maximum value of x4e–x2 is :-
Correct (-)
Wrong (-)
Skipped (-)